Successful Treatment of Blunt Musculophrenic Artery Injury by Transcatheter Arterial Embolization: A Case Report.

An 86-year-old woman was transported by ambulance after jumping from the second floor of a building. Upon arrival, the blood pressure was stable; however, computed tomography indicated the presence of an anterior mediastinal hematoma. Eight hours after arrival, the patient exhibited shock. The blood pressure increased with rapid infusion. Emergency angiography was performed. Extravasation from the musculophrenic artery, which branches off from the left internal mammary artery, was observed. Transcatheter arterial embolization was performed and bleeding was controlled. This is the first report of musculophrenic artery injury caused by blunt trauma to the best of our knowledge. Findings suggested that if an anterior mediastinal hematoma develops, bleeding must be rapidly controlled. If the patient responds to rapid infusion and injury of the internal mammary artery or one of its branches is suspected, transcatheter arterial embolization is considered appropriate.